XML 102 R91.htm IDEA: XBRL DOCUMENT
v3.20.2

Equity Compensation, Employment Agreements and Other Benefit Plans (Details 2) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2020 USD ($) officer | Jun. 30, 2019 USD ($) | Jun. 30, 2020 USD ($) officer | Jun. 30, 2019 USD ($) | Dec. 31, 2019 USD ($)
Deferred Compensation Activity |  |  |  |  |
Number of officers having employment agreements with the company | officer | 4 |  | 4 |  |
Deferred Compensation Plans |  |  |  |  |
Deferred Compensation Activity |  |  |  |  |
Deferrable compensation by the employee, maximum |  |  | 100.00% |  |
Non-employee directors | $ 347 | $ 39 | $ (1,558) | $ 325 |
Undistributed Income Deferred | 1,975 |  | 1,975 |  | $ 2,349
Liability Under Deferred Plans | 940 |  | 940 |  | 3,071
Deferred Compensation Plans | Non-employee directors |  |  |  |  |
Deferred Compensation Activity |  |  |  |  |
Non-employee directors | 347 | 39 | (1,558) | 325 |
Undistributed Income Deferred | 1,975 |  | 1,975 |  | 2,349
Liability Under Deferred Plans | 940 |  | $ 940 |  | $ 3,071
Savings Plan |  |  |  |  |
Deferred Compensation Activity |  |  |  |  |
Employer contribution percentage on first 3 percent of eligible compensation deferred by employees (percent) |  |  | 100.00% |  |
Percentage of eligible compensation deferred by employees qualifying for 100 percent matching contribution (percent) |  |  | 3.00% |  |
Employer contribution percentage on next 2 percent of eligible compensation deferred by employees (percent) |  |  | 50.00% |  |
Percentage of eligible compensation deferred by employees qualifying for 50 percent matching contribution (percent) |  |  | 2.00% |  |
Percentage of employer matching contributions that vest immediately (percent) |  |  | 100.00% |  |
Expenses for matching contributions | $ 120 | $ 125 | $ 240 | $ 229 |

X
- Definition Represents the maximum percentage of certain compensation that may be deferred by the senior officers and non-employee directors pursuant to Deferred Plans. + References No definition available. + Details
Name: | mfa_DeferredCompensationArrangementWithIndividualCompensationDeferrablePercentageMaximum
Namespace Prefix: | mfa_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the percentage of the employer's matching contribution on the first tier of eligible compensation deferred by employees. + References No definition available. + Details
Name: | mfa_DeferredCompensationArrangementWithIndividualEmployerMatchingContributionOnFirstTierOfEligibleCompensation
Namespace Prefix: | mfa_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the percentage of the employer's matching contribution on the second tier of eligible compensation deferred by employees. + References No definition available. + Details
Name: | mfa_DeferredCompensationArrangementWithIndividualEmployerMatchingContributionOnSecondTierOfEligibleCompensation
Namespace Prefix: | mfa_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the percentage of the first tier of eligible compensation deferred by employees and receiving the highest level of employer match. + References No definition available. + Details
Name: | mfa_DeferredCompensationArrangementWithIndividualPercentageOfFirstEligibleCompensationForEmployerContributionMatch
Namespace Prefix: | mfa_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the percentage of the second tier of eligible compensation deferred by employees and receiving the second level of employer match. + References No definition available. + Details
Name: | mfa_DeferredCompensationArrangementWithIndividualPercentageOfNextEligibleCompensationForEmployerContributionMatch
Namespace Prefix: | mfa_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents undistributed income deferred by participants under a deferred compensation arrangement as of the balance sheet date. + References No definition available. + Details
Name: | mfa_DeferredCompensationArrangementWithIndividualUndistributedIncomeDeferred
Namespace Prefix: | mfa_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represents the number of officers having employment agreements with the company. + References No definition available. + Details
Name: | mfa_EmploymentAgreementsNumberOfOfficers
Namespace Prefix: | mfa_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The percentage of employer matching contributions under a deferred compensation arrangement that vest immediately. + References No definition available. + Details
Name: | mfa_MatchingContributionByEmployerVestingPercent
Namespace Prefix: | mfa_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The compensation expense recognized during the period pertaining to the deferred compensation arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -SubTopic 10 -Section 30 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6409875&loc=d3e20015-108363 + Details
Name: | us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of contributions made by employer into fund established for purposes of making future disbursement to individual in accordance with deferred compensation arrangement. + References No definition available. + Details
Name: | us-gaap_DeferredCompensationArrangementWithIndividualContributionsByEmployer
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The carrying amount of the liability as of the balance sheet date to an individual under a deferred compensation arrangement. This amount may be the result of periodic accruals made over the period of active employment, or reflect termination benefits resulting contractual terms or a death benefit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -SubTopic 10 -Section 30 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6409875&loc=d3e20015-108363 + Details
Name: | us-gaap_DeferredCompensationArrangementWithIndividualRecordedLiability
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTypeOfDeferredCompensationAxis=us-gaap_DeferredCompensationShareBasedPaymentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_TitleOfIndividualAxis=srt_DirectorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTypeOfDeferredCompensationAxis=mfa_SavingsPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |